Lubrication



June 13, 1933. J. BIJUR 1,913,356

LUBRIGATION Filed Sept. 14, 1925 5 Sheets-Sheet 1 June 13, 1933. J. BIJUR 1,913,366

LUBRICATION Filed Sept. 14. 1925 5 Sheets-Sheet `.2

Incanto/L JaSe/o Byw @5% www LMl J. BLJURv l l,9l3,366

LUBRICATION June 13, 1933.

5 Sheets-Sheet 3 Filed Sept. 14. 1925 f lfm June 13, 1933. .1 BUUR 1,913,366

LUBRICATION Filed Sept. 14, 1925 5 Sheets-Sheet 4 llli @mmm

J. BIJUR LUBRICATION June 13, 1,933.

Filed Sept. 14, 1925 5 Sheets-Sheet 5 l the lubricant tun y Patented Julie 13, 1933 doenirr nuire, gestreken l l l l MOefQReTIQJ-ierwww@ y "Unir-E15lsml l preeent invention is concerned with gravity i Aflow lubricant distributing y systems f "und has preferred l application. in; association with ressure lubricatinws Steinslniore aparticulurly forx delivering?blubricant by gravity@flowfronif :L pressure line -toL the vor beeringorv bcarii'ige oli u Structure hevii "-1 uwiveled Ior otherinioveble comiection 5to the Structure:curryng thelpreesure ;line,`f\ und especially Whercfit vumlesirnble tol conjvfey der lpressure, pest orf nero `Suchswivel- J Y 1: m i The invention has zu preferred application :to the lubricationnol? the steeringyknuckles l of a` motor vehicle,` the broad objectcotzde livering lubricant u llreliably(` zto nefarious knuckle bearings, andwithout theneed for selective inmiipulatioln :l nor, the use olf: uzuge` iliury; swivels` or lof l napping conduitsu'or other parte likelyito `becomeA .dzunuged ini use,` undfwhich will, moreover, preclude the cntryofduet to "the bearingsurinc'ee.i L

- The `invention is concerned lnrgel`y`k with,

l though `not liinted tog Elliotteiiles; `that is,`

@to uxlesiwiltlji "lclevieee` struddling litho knuckles." i* V y` 1 Thepresentinizention inloneflorrniseon` cerned with zur unobstructed piping f or conduit `systeinlcarried by the knuckles,end

specially conjstructedtnd zirrengedtopess lubricinttherethrough; by gravity` v `flow "witliout nir blocking "onvfsiphoninggl even wie " port in or above the uppernbushing of the `lniuckle beuringaboutthe :kingpin In an H embodiment of the F present invention Where initted to the straddling niile elevie and flows `fto the piping "system on theknucklel-transversely across fthe `swivel between 1 theL upper PAM-Tfwe@" 3eme@ @tetten l 1 fece of `the f knuckle i the uzontigifutoiisi` ,falce `otthe` upperxaxle-lelevisjaw vWhere `the i upper iclevie` @j aw; of Ithe faule l bears upon. :the 1 top of the knuckle, the interposed thrust been ing ina'y` constitute such swiyeh; To preclude 1 the entryof duet or dirt tothe piping System through said swivel o1 thrust bear-ing; the u sanne `muy belinede dust-proof preferably `by en encircling downwardly `protrudiiigauiirniu `lue;iperinittifntgthe" frlee ewiyeling inovnenent"` of the knuckle. The `dust-proofinrearrangea nient frequently will 1 Seel enyf `vent through alla"` l lateral drainagetherefroin tof `thrust "bearing surface. 1 i j The passage zicrossflthe"thrust beuring may extend through `the *bearing l surface thereof `or "in -the` alternative, i the knuckle supplyin gl bore muy entend* longitudinally lfori` inet-ancei wthrough `the king l `pin zicros's ithe* thrust fbf-iaring;n free roni cont-act "with lythel bearing' lsurface thereof7 le radial l lbore 1 through the "kingpin ednlittingupart the :lubricant into the thrustbering'" l y l ln desirzble embodimenue king pinboreV in'eyz deliverlubricunt througli unlocking ypinthereorD which inVth-t casegfuffoiildbe corresponding socket laterally ol the" king pin, sa-id locking piny preferalblyc Lffording gullsoia, mount orthe upper or inletljendf-of' In a typeof` knuckleconstruction initfhich clevis, the 1 bearingbushinge `being` in the knuckle therebetween," lubricant' fied` totlie y y 'tkniickle'ecrose "the thrust bearing may `pzrs into a bore in the knuckle structure, provided with a lateral outlet from which the upper bushing receives some of the lubricant, the rest passing from the bore to the piping system on the knuckle.

In another embodiment of the latter type, lubricant admitted axially into the top of the king pin may be fed laterally outward therefrom about the outside thereof, past the upper bushing, and a baffle plate pressfitted into the knuckle b ore between the two bushings may intercept excess lubricant from the bushing and direct it into a lateral bore in,s the knuckle for delivery to the knuckle piping system.

In the accompanying drawings in which are'shown one lor more of various possible embodiments of the several features of the invention,

Fig. 1 is a view partly in elevation and partly in longitudinal section of one embodiment,

Fig. 2 is a transverse sectional view taken along the line 2-2 of Fig. 1,

Fig. 3 is a sectional view taken along the line 3-3 of Fig. 2, f

Fig. 4 is ,a view similar to Fig. 1 of another embodiment,

Fig. 5 is a detail sectional view thereof taken along the line 5-5 of Fig. 4,

Fig. 6 is a view similar to Fig. 1 of a further embodiment,

F ig..7 is a sectional View taken along the line 7-7 of Fig. 6,

Fig. 8 is a view similar to Fig. 1 of a further embodiment,

Fig. 9 is a detail transverse sectional view taken along the line 9-9 of Fig. 8,

Fig. 10 is a plan view of a modified form of baffle, y

Fig. 11 is a sectional view thereof taken along the line 11-11 of Fig. 10,

Fig. 12 is a view similar to Fig. 1 of a further embodiment, and;

Fig. 13 is a plan view of the cap of Fig. 12.

Referring now to Figs.. 1, 2 and 3 of the drawings, I have shown a knuckle construction comprising an axle 10 having an upper clevis jaw 11 and a lower clevis jaw 12 within which are press-fitted respectively lbushings 13 and 14 constituting bearings for the ends of a king pin 15, which vis locked into the knuckle by lock plug 16. The thrust of the axle is borne by a ball thrust bearing 17 fitting in a correspondingr socket in the upper face of the knuckle and sustaining the lower face of the upper clevis jaw. The two races 18 for the balls are maintained assembled by the metal cup 19,

the rim of which is clenched inward at 2O.A

A sheet metal cover member 21 telescoped over cup 1.9 extends into the knuckle socket and maintains the thrust bearing substanvtially dust-proof. The llower end of the y Vvlowerv bashing 14 Yis. :10sed. a press-fitted Vbe described in detail.

plug 22, a centralaperture in which is closed by a screw plug 23, removable for access of an appropriate tool to effect driving out of the king pin in disassembly. The knuckle has keyed thereto an arm 24 intermediate the ends of which there is mounted a tie rod ball pivot'stud 25 with its ball head extending downward therefrom and maintained in place with a taper fit by a nut 26. At the extreme outer end of the arm, the drag link'pivot stud 27 is mounted in manner similar to the tie rod bearing stud, the ball extending upward.

For lubricating the construction of the knuckle, which as thus far described in its general outline is well known, I have provided a construction and arrangement of parts now to be described. Lubricant is admitted through a drip plug 28v fitting in a corresponding socket 29 formed at the upper clevis jaw of the axle construction and maintained in position therein by a bushing 30, which clamps in position the inlet pipe 31 through which lubricant is supplied from a central system on the chassis frame. The drip plug may be of the construction shown in the copending application of Edward I-I. Kocher, Serial No. 22,104 filed April 10th, 1925. The upper end of the upper clevis jaw is closed by a press-fitted cover 32 determining a well or cavity 33 therebelow, which is supplied through a communicating bore 34 from the drip plug. The upper end of the king pin is formed with a well 15', so that lubricant from the well will drain through a relatively large bore 36 axially of the king pin extending down to and below the thrust bearing 17. The lubricant thus delivered into the bore is delivered through a piping system of construction which may be generically the same as that disclosed in my copending application, Serial N o. 39,415 filed June 25, 1925. For this purpose, I provide a dividing fitting generally similar to that disclosed in my said copending application and separately shown in Fig. 3, which dividing fitting need, therefore, not Said fitting, it may be briefly noted, comprises a casting or forging 37 having a pipe 38, longitudinally of its main bore, which communicates through an outlet 39 with a pipe 40, leading to the dragflink bearing 27. The fitting also has a branch 41 in which is fitted a pipe 42 of larger diameter leading to the tie rod bearing 25, said branch supplied with lubricant trickling through lateral openings 43 in the Wall of pipe 38.

In the present embodiment,` the king pin locking plug 16 serves for mounting the dividing fitting and for conveying the lubricant thereto. To this end, plug 16 is threaded into the eye of the knuckle and has aY reduced tapered inner end 44 with a wedge iii in @Corresponding reesvsdliftheikug rin-` The plug have antintegral `axial stud 45 therep about which sfittedfanl eyed@ formed "fs integral "partfotfthe ldividinglitting,

" y y TL eye Cleilpeld* 1`1 ne",1151011` by t e nut 47 @areaded `upon .th extreinefendlof the L" """endvlocked byu Eivaeheiifd `The lubricant "iffrorn fthe puking, pin "bore 36 emerges through qan axial jboreegfin the plugivhich, inturn,`

eliv'ersl` through `aradial b`ore`50 in thestud p a peripheral groove 951 tl/rereahout; that W dranisto` the pipe 38," inl the `dividing fitting `By the lcdnetruction,descrihech itr will be seen `th at the plug 16 performs theitrifple function 151 of; l-locking the kingpin inthe knuckleeaf- Fior 'V ing ineunt forthe head1; of the piping vsteni on the knu" Ale andafordinga tight l `ge for the lubricant between the `king Apin bore i and the'piln'iog"systeln` l Z lThefknuckle piping eysteinneedhnet be l :described indetail,` as it may be Similar "to "thatot niy cope/ridingapplication abovefref terred` to.` ltinhay `he"simply noted thattlie pipe 42`wleadinglto the tiefrod delivers in- 25 `iyard through aradial bore an `ivhich, inturn7 delivers to an axial bore "by in the pivot stud t r plugged at its outer end at vb y and emitting @lubricant through radialbores in `the -hall stud at e. The bores in the "drag link stud ,oyinay be `similarly` arranged,` `but are not fshoivnml N if'lhe ing pinisprovided `with a `flat 52e);- tending". the "entire length thereof, affording a restricted passage through `which some of 3 35 l"the lubricant in `the Binlay lloiv downward andcolleetin the cavityf22. below the Hfking'pinand spread upward intolthe lOWGr king pinbushinglll. t The thrusthearing 17 Sie lubricated through a radial bore 53 corninunioating `With exialbo're" and at `the level ofthe bellfbearingi t t In; operation lubricant frein `drip plug 5o` plied. y A part of the lubricant iS intercepted at-theilat52lof the king pin andjdelivered to the lower kingpin bushing 14. t x

" y In Figs` and fis Shown a construction t generallysilnilar to `thatjust described, difa L 55 lteringtherefrom essentially indelivering the liibricantl to` i the piping system through y i a course independenttof the-king pin and in avhieh, moreovenwthe dividing ittingyis mounted for deriving its lubrieant from the j ogthrust bearing;17?.-111i`orthis purpose, the

ltudina`l`bore 55 `suppliedfrom the Well 33' byan inlet portii"l and draining through an aperture `56 inthe `coverl ot theqthrust 65 `beaming to lubricateftheeame. staravaeher interposed in this construction between the` ball raceasseinbly 17 and an enclosing eapsulelQQwhich in tinscaserests directly uporifV the `kinickle rathier than inta special t Socket "thereifor.` For inounting the" divid` in li tting 58j 1I provide an integral lateral "lugf59 thereonfsiinilar to' the"`construc`tion of iny copending"application above referred fto`,\vhi`ch isbolted as at 6O to the` knuckle. For leadinglubricantfreinl the "thrust bea`rstructure the "dividing ttingg the `knuckle has horefl ltherein 'extending dovvim*ard` ii'roin` `the"`upper` `tace ithereoh `a bnshihg thereint`o"`arid" into the thrustf'bearing "capsule 19 maintaining the lower orcup member of said capsulefrigid "Withftl'ie knuckleand admitting `lubricant "Without leak to the bore 61 from the thrust Y The bore `61p communicates Witha i horizontal bore 63' in the knuckle5`the inetal f being machined liat at thekoutlet end of said l'hore for lubricant-tight face i't thereagainst itting 58.`` A short length of tubing 64 press-fitted into i the knuckle and the ldividing fitting and extends across the-contacting i faces thereof as a further `safeguard against leak of lubricant. As "shown, the dividing ,fitting 58 is closed as at 65 at its upperend and has an oblifquelpassage' deliveringthe lubricant from knucklebore 63 into the inain "bore "138i` oi saidiitting, `In the presentl enibodiinent,` the king pin is fprovided"with fiat '67 extending downward from the lower face of,thethruetbeaning to 1supply the lower" "kingj pin bushing 14C. ,t y i t 4 The einbodiinent of Figsf and 7 co`ncerned with a knuckle oil'type in which the 'hearing bushings 7() "and"` 71 are provided Withinfftheknuckleborc, which is straiddled `bygjaws `1'2 andf of theaxle clevis. The kingpin 74- has a head" 75` retained "by shoulder 75T fonl the upper axleclevie jaw` against rotation," a nut 76` on theloiver threaded `end "olf the king pin eecuringthe `saine in` position. :The thrust bearing in this case, is shown comprising a pain of "thrust` Washers, Jthe loiven'' of which reets on the knuckle `and `has `a locking pin 8"therethrough fitting V in: a corresponding notch 781 onthe knuckle.`

flfhe `upper tlnjustlivaelier 79 ie maintained locked rigid` with the knuckle by a locking of a] correspondingly flat face "on the'divich i `Inen'iber 8O Whiehin thiefcasealso permits i i entry of thetluhricant Vto the knuckle, asl Will be described below.l y TheV trust bearing is rendered substantiallydust-proof `the downwardly extending' `flange `of `a `sheet metal enclosing capSl., `clamped in, position `between the upper thrust Washer 79 and the tippen Eclevisjaiv `172; A `drip plugiSQis fitted inl `a corresponding socket `formed integral with the upperend of theaXle clevis jaiv f and delivers through. an oblique port 183, pasteani'obiique length `lof "piping 80, t

prseqitted 1i into the une andi extending i Y knuckle structure.

. against rotation.

obliquely into a corresponding aperture 84 in the upper thrust washer, to key vthe same The lower thrust washer is provided with a concentric groove 85 in its bearing face, draining through an aperture 86 therethrough into a vertical bore 87 in the The vertical bore in turn communicates with a horizontal bore 88 and affordsadmission to a dividing fitting 58 constructed in manner identical with that described inconnection with Figs. 4 and 5, and which need not be again described, corresponding parts being designated by the same reference numerals primed. In this embodiment, lubricant is passed tok the upper bushing from the bore 87 through corresponding bore 89 transversely through the knuckle, plugged at 89 at its outer end, and delivering into a bore 90 registering therewith in bushing 70.

In operation, lubricant admitted through the drip plug 82 will flow through port 83 and tube into aperture 84 in the upper thrust member 79 from which part will spread laterally to lubricate said bearing, the rest draining through bores 87 and 88 in the knuckle into the dividing fitting 58 from which the drag link and tie rod bearings are supplied. Some of the lubricant from passage 87 will spread through port to the upper bushing 70, the excess from which flows downward along the kin pin 74 to supply the bearing of the vlower ushing 71. y

In Figs. 8 and 9 is shown another mode of lubricating a knuckle of the general type shown in Figs. 6 and 7. In this embodiment, I have shown lubricant admitted through a drip plug 91 fitting in a socket 92-in the upper end of king pin 74. The socket 92 communicates with an axial bore 93 in the king pin which drains through one or more radial bores 94 at the level of the thrust washers 77 -79 to supply the bearing surface thereof. To assure an adequate supply of lubricant for the thrust bearing, an annular trough 85 is provided in the bearing surface of washer 7 7 in which may be stored lubricant delivered from bore 94 through connecting radial grooves 852. The knuckle bearings are supplied with the bulk of the lubricant from bore 94, through longitudinal grooves 95 along the king pin. To facilitate the division of lubricant between the thrust bearing and said grooves 95, the

king pin has a peripheral groove 96 aligned with the thrust bearing, and intersected by said grooves 95." The lubricant will tend to flow from grooves 95 along the downwardly and outwardly beveled lower edge of bushing 70 to the bore of the knuckle where the lubricant is intercepted by a sheet metal baffle member 96, press-fitted into the bore ot the knuckle between the bushings 70 and 71. Bae .96 has an inwardly and upwardly beveled rim 97 from which the lubricant drains through a horizontal bore 98 in the knuckle plugged at its outer end 98', said bore in turn delivering through a communicating bore 99 at right angles thereto, withfthe dividing fitting 582 constructed and arranged in manner identical with that of the embodiment of Figs. 5 and 6. The inner edge of the beveled rim 97 affords small clearance about the king pin and permits some of the lubricant that has passed through the grooves 95 to proceed along the king pin and supply t-he bearing surface of' the lower bushing 71.

In Figs. 10 and 11, yis shown a modified form of bafile member differing from that heretofore described merely in the elimination of a segment as at 972 of the beveled rim 97, so that, as may be desirable in certain eases, a larger proportion of the lubricant will pass to the lower bushing than in the construction shown in Figs. 8 and 9.

In Figs. 12 and 13, is shown another embodiment applied to a knuckle of the general type shown in Figs. 1 to 5, but illustrative-ly shown provided, in lieu of the ball thrust bearing` member, with a thrust bearing formed of a pair of washers, the lower 100 ofl which is keyed to the knuckle by a downstruck tongue 101 extending into a corresponding depression 101 in the upper face 'of the knuckle. Theupper washer 102 is friction-fitted about the protruding lower end of' the upper bushing 103, which, in turn, is friction-fitted into the upper jaw 104 of the axle clevis. In this embodiment, as in that of Fig. 6, a. sheet metal cap 105 is pressed between washer 102 and the upper clevis jaw, and has a downwardly extending skirt or flange to prevent the entry of dirt. The lubricant in the present embodiment, is admitted to the knuckle by a construction and arrangement generally similar to that disclosed in Fig. 3 of my copending application, Serial N o. 89,415 filed J une 25, 1925. lVhile in that other construction, the upper clevis jaw rotates with the, knuckle, rendering desirable the interposition of a dusttight swivel between the inlet and the clevis jaw, such precaution is eliminated in the Yapplication to a stationary' clevis, as here disclosed. The cap 106 is secured directly and rigidly -to the upper end of the clevis 104 by means of lock screws 107. The cap 106 is provided with a unitary pilot flange 108 extending between the clevis and the upper end of the king pin 109, which as shown,protrudes above the upper end of the bushing 103. y

The cap is also provided with a central pilot stud 110which fits into the upper end of a bore 111 extending axially of the length of the king pin. In this embodiment, I have illustratively shown the inlet fitting 112, also a dripping, secured in a unitary boss 113 y in the axlefand` deliveringythrough, aborei stantialzannular area between the twonbush.

y i 11-l^` in said aXle directly intoa cavity .1151 r in the lower face of the capfwhich, being` i tightly pressed against the Aupperiface of the i knuckle aiords f a :lubricant-tight .f passage.` l

igelaeeef The cavity 115 communicates with alpair ofrbores 116 `and 117 y restricted by pins i116 and 117 respectivelyu passed thereinto from` the exterior, and `retained against `loss :by 1Ul plugs fitted into the) outer .ends of* said bores.*.Therestricted passagell in turn` communicates `with a` downwardly sloping.;1

bore 118 communicating i with `an axial bore 119 in the "Capt-hat drainssinto the kingpin bore 111, while passage `1117.communicates with a bore `120 also; radially ofuthe cap,`

which drains through a narrow downwardly extending lnozzie121 `in the pilot flange` 108.

. 1 The upper bushing 103 is provided with "a i longitudinal groove `122 throughuwhich` the lubricant through the nozzle 1Q1glgdrains by "way of recess...123,` in the `upper washer 102 y ol'vmounting the same, to `the dividing f1t-` parts of the `embodiments of Figs. Lato` 131` dustfproofingl `seal oi'-` the swivel or'l 'thrust i bearing may `alsoexclude air,` especially when it is wetwith oil,` so that thefknuckle i pipe or i conduit system` may i be unvented.

lnucertain leases -toobviate possible` co"nse-` quent `detective flow; operation, the conduits leading"lubricant-tol the bearing orfbearings at lower level may be of relativelyularrgeldi` i aineter; that is, roi: MJ ibore` or `more, suflii cieutly Alarge to,` allow the? lubricant to flow therethrough about any airtherein.` `1I have` toythe thrustwbearingsurface between .the washers l 1 "00,` andi-,102i Y Afport` 1211 `in the lower washer` `delivers into-` a short length` of pipe` `125, u;prfess-tted` into al correspond-1 1 inglwoblique.boreKin the knuckle,over-the` protrudingend-oi' which pipezis press-fitted theinlet neck126 of? a dividingfitting 127, similar in; constructioneitcept for the mode ting shown in'theiotherembodiments. 1x-

i `Theconstruction" and operation offthose not described in detail, lwill be readily understood romthe description of the `corresponding parts of theembodiment of Figs. 1 toB.

, In all `of the` embodiments disclosed, lubricant propelled `under pressure `throughka pressure-line1is advancedpast ardrip plug affixed to the axle andprooeeds substantially without fpressure, across one ofthe swivels between the i i axle `.and the, knuckle.` i into the i knuckle `piping systemithat leadsitothe bear- 1 ingor bearingsicarried `byitheiknucklea Y; i

In `all. olf thei embodiments shown; `the specialrcference to pipe142 inthe embodiment oFig. 1 andthe correspondingpipes 00 in the other embodiments. In the embodi-` xnent of Fig." 125. lubricant is 4passedto the loweri` king pin pivot bearing through a bore i magnitude `.and llorl the .samepurpose. In,` the embodiments.otFigs. 6 to 10, the subs y tional area exceeding the minimum men,

`By such an arrangement, lubricant ad` ings across which lubricant trickles `from` the upper to thelower isalso` of crosssec tioned.

mitted tothe yhead oilithe unvented'conduit:

ameter `pipewand fbores referred to, also" pre-;

cludes the" withdrawal through i the `lower bearings.` oi' lubricant that mightV1 otherwise '1 be siphoned from lthe higher" bearings. i

In each: of theembodiments, as illustrai tively shown in 1, the ballwpivot `stud 2710i the drag linkis shown eXtendingup-` ward and has an outlct27 at substantially the Ilevel of the.dividing` fitting 37.1 i- Block-` ing by air of lubricant admitted "intoany f part of the interveningpipea, which ex-` tends below outlet 27, is inherently precluded even though as shown, the same` befofldiameter less than :required `to pass lubricant about any airtherein, The length oiipipe below the outlet127 "acts as :a lubricanttrap and airwill not enter thereinto *after once the` conduit has beenffully charged with lubricant.A

l Statedlgenerically,"the piping system on the l knucklewhen closed `against. venting may beL of bore suiliciently `large `to` permit? flow of `lubricant aboutfany air thereinat.`

allparts `thereof above thelevel of the bear-i` ing :outlets supplied therefrom. `'Iheboresw` through the pivot ball studs, however, may be of small diameteryas shown inithe draws` regardless whether said studs extend`= ings, upward ordownward.

Inicertain `ot` the claims, `Iuse theterm control bearing as applying to one of the bearingsof associated with or" adjacent to the knuckle. This term includes generically j any of" the bearings "at the knuckle by which almoveinent ofl or operating adjustment on the knuckle for thewheel thereonis ef-` fected` or transmitted from one` to the` other knuckle.`

Y It `will be understood `that `the:invention` is applicable `to steering knuckles `not connected withtheste'ering gear, that is, to one devoid of a drag link arm and certain ofthe generic` claims apply to such construction.

y It will `also be understood that while theV Y speciiic ldrip plug construction'above referred to is. preferred as the terminalfrom which` the knuckle bearingsare supplied, terminals` ofother construction may be employed, regardless whether they may benproperly zdesignated as drip plugs, provided onlythey emit the lubricantnowfaster than it "can be accommodated in the knuckle and the vbearings thereof. Y'

The control bearings referred to in the accompanying claims, the lubrication of which the'present application is particularlyl adapted, include the pivotal bearings or the upper vand lower king pin bearings, the thrust bearing, which also may be a pivotal bearing, the tie rod and drag link bearings and other bearings which may'bevpositioned upon and carried by the knuckle or be located adjacent to the knuckle.

The expression axle has 4been generally used to include the chassis member pivotally supported bythe knuckle and the expression king pin has been used to include generally the pivotal mount of the knuckle -upon the axle. In the specific embodiment shown this kingpin does lnot vform a part of the axle or the*l knuckle but is fixed in one and bears-in the other. f

The present invention also includes the Vsupply of lubricant across other swivel coning mount therefor, a dividing fitting'rigidwith the knuckle and carried thereby, a pipe of relatively large diameter extending downward from one branch thereof to the tie rod bearing, a pipe extending from the other branch along the structure of the drag link arm to supply the bearing thereof, a lubricantv inlet carried by a part rigid with the axle, said structure including a dust-tight swivel between the axle and the knuckle, and draining means encircled by the outer periphery of said swivel for conveying lubricant from said inlet to said dividing fitting. Y2.. In a motor vehicle, in combination, an axle having a clevis, a steeringy knuckle extending between the jaws Vof saidclevis, a king pin affording a pivot bearing forsaid knuckle and fitting at its ends into said clevis jaws, an inlet fitting carried by a part rigid wit-h said axle, a fitting .carried by the. knuckle at a part thereof adjacent the'king pin', a'pipe leading from said knuckle fitting to abearingof the knuckle, a conduit for conveying lubricant from the inlet fitting to the knuckle fitting, including a swivel encircling the king pin having an annular part rocking with the knuckle, and a conduit bored into the knuckle, and draining from said annular part to said knuckle fitting.

3. In a steering knuckle, in combination, an `axle of the clevis type, a knuckle having a king pin therethrough extending into the jawsof the clevis, bearings carried by said knuckle, a thrust bearing sustaining the axle upon the knuckle, means carried by the axle admitting lubricant for said bearings, said axle of the clevis type, a knuckle, a king pin.

therethrough extending into the clevis jaws of said axle, an inlet fitting carried by the upper axle clevis jaw, means affording a gravity flow passage from the inlet fitting to the structure of the knuckle, said means including a substantially leak-proof thrust bearing between the upper clevis jaw and the knuckle, and a conduit along the knuckle leading.V the .lubricant that has passed thc thrust bearing from the bottom thereof, to a bearing carried by the knuckle.

5. In a motor vehicle, in combination, an axle having a clevis, a knuckle straddled thereby, a .king pin therethrough affording a pivot bearing for said knuckle, means rigid with they upper clevis aw affording an inlet forlubricant, a thrust bearing resting' upon the upper face of said knuckle and carrying the upper clevis jaw,` a draining passage through the upper face of the knuckle structure and supplied with lubricant drained from the bottom of the thrust bearing, and a conduit system carried by the knuckle delivering the lubricant admitted to said drains ing passage onward to a bearing carried by the knuckle. v

6. In a motor vehicle, in combination, an axle clevis, a knuckle, arking pin through said knuckle and said clevis and affording a pivot bearing for the former, a thrust bearing interposed between the knuckle and the upper clevis jaw, an inlet fitting carried by the upper clevis aw, a passage through said clevis jaw, extending downward to one side of the king pin and delivering into the' Lipper face of the thrust bearing, a passage in the knuckle draining the lower face of the thrust bearing, and a conduit system carried by the knuckle delivering the lubricant from said draining passage onward to one or more bearings carried by the knuckle.

7. The combination set forth in claim 6 in which the thrust bearing includes a substantially dust-proof enclosure and in which the .conduit system has voids sufficient-ly large-to prevent the formation of a vacuum therein, whereby only clean lubricant will be passed to the knuckle bearing, and the flow will occur promptly. v

8. In a motor vehicle, in combination, an axle clevis, a knuckle extending between the jaws thereof and having a pivot bearing with respect thereto, a thrust bearing sustaining t-he axle upon the knuckle, a lubricant inlet carried by the axle, and a passageway through a part rigid with said axle, and delivering lubricant from said inlet withthe knuckle and ata level lower than "the thrust bearing, nieansior lubricating "said thrust bearing `and said `other bearing,

` sad `drained "lubricant to` said bearing.`

`cludingduslrfrom said thrust bearing, a

p ing.

by gravity flow `to said thrust bearing, said `thrust bearing having a part therethrough i leading to a boreiii said knuckle and a dividingfitting carried by said knucklefand` Nsuppliedfioni said bore, said fitting having `one branch leading along the drag` link arm i posed between `the knuckle andthe upper` ""clevis jaw, `a lubricant inlet` carried `by the u`ppei-clevisjaw, a passage longitudinally `ot f the *upper clevis jaw, `draining lubricant `from said-inlet into the upper i'aceof the thrust bearing, a passagelaterally ofthe king' and `in the` knuckle, draining from the lower face" oi the thrust bearing and a dividing fitting carried by the knuckle com-i municating withsaid knucklebore and havingl one branch leading along theiidrag link `arm to the corresponding bearingand 'another branch. pipe leading to the tie rod bear- 10.` In a motor vehicle, in combination, an

axle,1 a knuckle, a pivot mount forlthe` lat-` Ater in `the former, a thrust bearing interposed betweenthe upper end of the `knuckle anda partofthe axle, abearing associated said"V means comprisinga lubricant inlet eari'ied by the axle near the upper part thereof, a passage through the axle draining across `the thrustbearing, an `aperture through the lower bearing member; of the thrust jbearing, draining lubricant fromthe latter, and a conduit carried by the `knuckle conveying ll. ln a motor vehicle, incombination, an

" axle, a knuckle, a king pinv affording a pivot `mount for said knuckle in said axle, a thrust bearing interposed between `the upper end of "said "knuckleand said axle, means exdra`g"`link bearing and a tie rod bearing carried lbysaid knuckleand at a level lower thansaidlthrust bearing,fnieans carried by the axle delivering lubricant to saidthrust "bearing,

the lower thrust bearing `member and a conduit system supplied from `said bore, `said `system including 'a dividingffitting carried by `the knuckle, a pipe extendingfroin one brancliithereott"to the tie rod bearing and another pipe extending from ano-ther branch thereof to the drag "link bearing.

l2. `In "combination with a motor vehicle having an axlehaving a clevis, a knuckle extendingbetween thegaws of saidclevis,

abore in the upper tace of the "knucklefsupplied`from an aperture through a king pin affording a pivot mount for: said jaws and athrust bearing composed of la pair of `washers v interposed fbetween `the knuckle and the upper clevis jaw and en- Ylation `for `bearings associatedl with the knuckle comprising a lubricant inlet fitting. carried by theupper clevis j aw, allongitudi` nal `passage rigid with said clevis jaw and communicating with `said iitting, anapei' ture in` said upperwasher communicating with saidpassage, an aperture in said lower i washer draining said thrust bearingand a piping systemcarried bythe knuckle and `in direct communication with said lowerfaperture, said piping system extending along 'the structure `of the knuckle to one or more` .i of said bearings` and supplying lubricantw thereto.

18. In knuckle arrangement having an axle eye, aknuckie, a king pin therethrough extendinox into said eye, a thrust bearing between said knuckle and said eye composed of a knuckle and extending through the clevis.

circling the king pin; a? lubricant instali combination with` steering i pair of. thrust washers and means keying the4 lower of `said washers to said knuckle;V a 'lubricating installationfor a bearing or bearings associated with the knuckle coniprising a lubricant inletcariicdiby `the eye, a duct in a part oit tl'iestructure'rigid with said eye draining lubricant torthe" thrust bearing surface, an `aperture sin theI lower washer of the thrust bearing, Vabore in the knuckle structure receiving lubricant therefrom and a piping system carriedbythe i knuckle conveying said `lubricant `onward `to `the bearing or bearings thereof. il

14. lncoinbination iwitli a` motor vehicle having an-laxle clevis, a knuckle straddled,` thereby, afking pin rigid in `said knuckle" "ico and bearing in the jaws of said clevis,

`thrust bearing interposed` between said knuckle and the upper clevis `j aw and aA busliinglixed in said clevis jaw affording a bearing for the upper end ofthe king pin,

i a lubricating installation rlor bearingsassoelated with said knuckle comprising an inlet carried by a part rigid with the axle, a

bore extending parallel to the king pin axis y through a part rigid with the upper clevis` ljaw `and deliveringto said thrust bearing` 1 a bore in the upper` face of the knuckle receiving lubricant from said thrust bearing and supplied `from said bore. l

l5. In a niotorvehicle, in combination, an

and a piping `system carried bythe knuckle axle having a clevis, a knuckle straddled thereby, a king pintherein having bearings iii the jaws of said clevis, a `lubricant inlet i carried by said axle at a part near the upper` `end thereof and a downwardly extending vertical bore extendingdownward from the i iupper `face ofthe knuckle, draining lubri- :cant `from said inletrand communicating with a horizontal bore in said knuckle and at the upper part thereof, and a piping system carried by said knuckle intercepting the lubricant from said horizontal bore and extending generally downward along said knuckle to the bearing or bearings thereof.

16. In combination with a motor vehicle, an axle, a knuckle, a king pin affording a pivot mount for said knuckle, a thrust bearing encircling said king pin and interposed between said knuckle and said axle andv a control bearing member rigid with said knuckle; means for lubricating said thrust and control bearing in parallel comprising an axial bore in the upper end of the king pin, a conduit supplied therefrom carried by the knuckle and leading to said control bearing anda radial bore in said king pin communicating jwith said axial bore and at the level of said thrust bearing to supply the latter with lubricant. v v

17. A steering knuckle of the type having` an upper thrust bearing face, a fitting clamped against said knuckle and in registry with a port at the clamping face thereof, a bore in said knucklel terminating at the upper thrust bearing face thereof through which lubricant is supplied to said port and .a pipe communicating with an outlet of said fitting and leading to the tie rod bearing.

18. In a motor vehicle, in combination, a knuckle including a tie rod bearing at lower level, and a drag link bearing at higher level, a piping system for supplying said bearings, said system including a dividing fitting clamped against the knuckle, a pipe ex tending along the structure of said knuckle to supply the drag link bearing, and a pipe connecting the other outlet of the dividing fitting to the tie rod bearing, and means for supplying lubricant to said dividing fitting comprising a downward bore from the thrust bearing face of the knuckle, and an outward bore supplied therefrom and ex tending transversely through the clamped face of the dividing fitting.

19. In combination with a motor vehicle, an axle clevis, bearing bushings press-fitted in the jaws thereof, a knuckle and a king vpin rigid with said knuckle and bearing in said bushings, a lubricating installation for one or more bearings associated with said knuckle comprising a lubricant inlet 0n said axle, a bore extending axially from the upper end of said king pin partway therethrough to drain lubricant from the inlet, and a conduit carried by the .niuckle and extending along the structure thereof to one of said bearings, the inlet end of said conduit extending laterally into said king pin to drain lubricant from said bore.

20. In combination with a motor vehicle, an axle clevis, a knuckle straddled by the jaws thereof and a. king pin therein extending into the jaws of said clevis and affording bearings for said knuckle; a lubricating installation for one or more bearings associated with said knuckle comprising a lubricant inlet carried by a part rigid with the axle, passages delivering lubricant therefrom in parallel to the lower king pin bearing and to one or more of the other of said bearings and restriction dividing means determining the division of the lubricant between said passages from said inlet.

21. In combination with a knuckle arrangement, an axle eye, a bushing fixed in said eye, a. knuckle below said eye having a pivot stud extending into said eye and a thrust bearing between the knuckle and said eye; a lubricating installation for one or more bearings associated with said knuckle comprising a lubricant inlet carried by said eye, a longitudinal groove in the outside of said bushing for draining lubricant from said inlet to the bearing surface of said thrust bearing, a conduit system carried by the knuckle leading to one of said bearings and a passage to said system from below the thrust bearing for draining lubricant therefrom.

22. In combination with a motor vehicle having an axle clevis, a knuckle between the jaws of said clevis, a king pin therethrough protruding into and bearing with the jaws of said clevis, a thrust bearing interposed between the knuckle and the upper clevis jaw and a bushing press-fitted into said clevis jaw; a lubricating installation for one or more associated bearings associated with said knuckle comprising a pair 0f separated small longitudinal grooves in said bushing communicating with the bearing surface of the thrust bearing, a lubricant inlet carried by the axle and delivering to one of said grooves, a transverse passage establishing communication between the bottoms of said two grooves and a bore in the knuckle draining said thrust bearing.

23. In a steering knuckle arrangement, in combination, an axle eye, a knuckle, a king pin rigid therewith, a bushing press-fitted into said eye to afford a bearing for the king pin and a thrust bearing sustaining the axle upon the knuckle including a disk immovably fitted upon a part of the bushing and a second coacting disk keyed to the contiguous part of the knuckle and a lubricant conduit system including an inlet on the axle, a longitudinal groove onthe outside of the bushing and registering notches in the disks directly below the outlet of said groove conduct-ing lubricant from said axle to said knuckle.

24:. In a steering knuckle arrangement, in combination, an axle eye, a knuckle, a king pin rigid therewith, a bushing press-fitted into said eye to afford a bearing for the king pin and a thust bearing sustaining the axle upon the knuckle, yincluding a disk pressiitted upon a part of the bushing, asecond `coating *diskikeyed to the `contiguous part `ofthe knuckleand a sheetmetal cap pressed against the eye by the first mentioned disk `and having a y downwardly directedskirt extendingbeyond the thrust `bearing face and a lubricant conduit system including an inlet on the axle,` `a `longitudinalgrooveon` the `outside 'of the" bushing and registering i notches in thedisks directly belowl `the out let oi said groove conductinglubricant from said axleto said knuckle,` 7 1 i 25.*In` combination with amotor vehicle havingan axle and aknuckle,` said knuckle having a pivot lmount Withrespect tol the axle;` a lubricating* installation for one or more bearings associated with said knuckle comprising a lubricant inleipstructure'` for eujiplyingsaid `knuckle and fixed to' theupassociated with said knuckle comprising a cap fixed to the upper end ofthe clevis, a

` `lubricant inlet Plitting admitting lubricant "to" said cap, an-axial king pin boreya pair or" iioW controlling passagesthroughsaid "capi `one draining into said laxial bore;1 and the other to the upper pivot bearing of said "king" piu and `a fconduit system carried Aby said knuckle "draining excess "lubricantfrom said" upper bearing for supplying other of "said bearings.

i `27. In combination lwith a motor vehicle havinga clevised axle, a knuckle straddled thereby, a king pin iixed ltherein,` bushings inthe jawsof said devis-constituting pivot `bearings for the ends ofsaid'king pin and "a thrust bearing upon the `knuckle sustaining theupper axle `clevis jaw; a lubricatingin-v stallationfor:one or more bearings `as`soci- `atedwith said knuckle comprising al cap secured to the upper endofthecleviswith y abplurality of bores and With a pilot flange protruding into the space about the king pin *and above the upper bushing; `a lubricant inlet rigid vvith the axle admitting lubri cant into saidfboreafanaxial bore through the length oftlie` king pin from Whichihe -lower "bearing thereof I"derives lubricant `re- `ceivinglubricant from onefof` said cap bores `:and a longitudinal groove onthe `exterior` *GQ the upper*- bushing `receiving lubricant t `i'rcnfn another ot said bores jand supplying `saidthrustbearing.`

`28; In1 apparatus of Vthey character"` described; incombinatiom `a knuckle having la kingjpinthereiinyan"upper clev'isjaw into combination Witha motor vehicle whichV said king` pin liextendsiand al" ball thrust bearing interposed between said clevis jaw and `said knuckles said lthrust bearing having an enclosingswivellingfcapsule Jfor "p76 excluding dusttherefrom a` lubricant inlet fitting carried bythe upper clevis jaw and delivering inthy1 a Well communicating with theliking pin bearing, a `draining bore through said clevis ljavv parallel'to the king `pin and `deliveringfthrough a corresponding aperture in the swivel capsule into thethrust bearing," a bore in the corresponding `face` of the knuckle,1ldraining'lubricant from `said thrust bearing intothe "structure of the knuckle, and apiping system carried bythe knuckle delivering lubricant from the draining bore to the bearing or bearings requir ing lubrication.

\ 29; As an article for manufacture, a steer` ing knuckle to be pivoted `at an axle clevis saidknuckle carrying a dragilinkarin and atie rod arm,` andividing fitting securedto said knuckle, a passage boredthrougli parts rigid with theknuckle from anupper face y thereof downward tof the inletaof said divid- `ing fitting` and a `pair of pipes connectingthe branches ofgsaidl dividing fitting to the tie `rod and the drag link bearings, all `parts/of said piping system above the level of the tierod and 'drag linkoutlets being of bore sunciently large to permit' flowfof lubricant about-any' air therein, whereby airblocking and siphoning wvill lbe: precluded when the knuckle is associatedwviththe axle in a inanner to preclude venting thereof. t

30. `In combination with amotortvehicle,

havinga clevised` axle, a knuckle'and a king Y i' pin throughsaid` knuckle bearing' in the aWs of the axle clevis; alubricating installation for one or more bearings 'associated with said knuckle comprising a bore in theking pin,V a 4lubricant conveying key communicau ing with said `bore and locking saidking pin in-saidknuckle anda conduit supplied from a lubricantV assagein said key and leading toone of said bearings.

` i 3L y InV combination Witha motorvehicle having a "clenised "axle, a knuckle straddled bysaid clevis and aking pin bearing in said axle andineans locking said king pin tosaid l knuckle, including a "plug fixed in said knuckle and having a beveled extension wedged? into? corresponding depression in the lateral ifa-ce of the king pin; alubricatassociated vvith said knuckle `comprising a bore in `said plugfa pipe connected `to said bore and extending along the structure of said knuckle to one of saidbearings and a bore throughjsaid king pinfor supplying lubricantto said plugbore for supply tothe pipe.

32;Inr combination iyitha motor vehicle i having an axle clevis, fa knuckle between the jaws' thereof; `a king pin through "said ing installationfor onecr `more bearings i knuckle.havingbearings in the aWs of said clevis andi a-pin ,transversely through said knuckle and extendinginto a corresponding cavity inl said king. pin to lock the same with respect to said knuckle; alnbricating. installationfor one or more bearings4 associated with said knuckle.comprisingan axial bore iii-said king, pin for delivering lubricant through theupper end thereof, 'an axial bore in saidilockinglpin forinterccpting the lubricantifromY said king pin, an eye. member encircling the outer end` of said locking pin and intercepting' the lubricant therefrom -and a pipe connected to` said eye and conveying said lubricant to one of said bearings.

SBl As an article ofmanufacture, ang/as; sembly including a. knuckle, an axiallybored king Vpin therethrough and4 a transverse locking pin inthe knuckle having abeveled inner end fitting in acorresponding cavity inthe king pim-said ypin having areduced studat the-outer end of said pin fo-rimounting one end of a piping system to be carried by the knuckle,an axiahboretherein anda ra dial bore-in ,the reduced stud communicating therewith., the axial bore in the king pin draining intoj the axial kbore of said lock,-

ing pin. y

34,. In arksteering knuckle, a .piping system carried thereby, a king pin having a passage therethrough leading to said pipi-ng system, and common Kmeans for affording communi# cation from lsaid king pin bore to said pip- .ing,-systern',vr forJ mounting one. end of said piping. system and for locking theking pin inthe knuckle. y ,l A- ,Y

. l 8,5. yIn Icombination with a motor vehicle, a clevsed axle, a knuckle betweenthe, jaws of said. clevis, l aj king pin through said knuckle bearing in said clevis jaws, andfa thrust. bearinginterposed between the` upperend ofthe knuckle and the upper clevis jaw; a` lubricating,installation for one.v or more bearings associated with said knuckle comprising aninlet in said upper jaw, a ywell at theupper end ofsaid'jaw receivinglubricanty therefrom, an axial bore inI said king pin draining said well,A a radial bore through said king. pin delivering part of said drained lubricant tothe 'thrust bearing surface, a piping system carriedby` the knucklejand a sustaining pin for the inlet end iof Vs aid pip,- ing system, said pin having a bore supplied from the kingpinrbore and feeding the piping,and extending ywith an oil tight -it laterallyfintoisaid king pin, thereby locking the same in the knuckle.

i 36. vIn amotor\ vehicle, in combination, an `axle having a'clevis, a,y knuckle, a bearing stud for the upper end ofsaid-kmickla a thrustv bearing, interposed between the knuckle and the upper clevis jaw, an inlet fitting carried bythe upper clevis jaw, a passage through said ,clevis jaw, extending downward at one side of thebearing Vstud and. delivering. into the thrust bearing, a draining passage in the knuckle communieating with the thrust bearing, and a conduit system carried by theknuckle delivering `the lubricant from said draining passage onward to one ormore bearings carried by the: knuckle.

37. In combination with a motor vehicle havingan axle, a knuckle, and aking pin affording a pivot mount for said knuckle; a.lubricating;installation for one or more bearings associatedfwith said knuckle comprisinga bore linsaidking pin, a lubricant conveying pipe and means establishing communication ,between said pipe and said king` pin bore including a plug having a wedging lubricantftightiit with respect to a part of said l king. l pin.

38. In; combination with a motor vehicle h'avingan axle, a knuckle, one having a clevis straddling the otherand a king pin alfn'ding` apivot mount forsaid knuckle at saidaxle; a lubricating installation for one or more bearings associated with said knuckle comprisinga bore in. said king pin, a lubricant conveying pipe and aterminal effecting a lubricant-tight connection. between said pipe and saidbora-said terminal includling ascrew plug, threaded into the straddled structure, with atapered.end-wedged into a corresponding depression in the king pin, thereby locking2 said king pin in position and with mountingineans forattaclnnent of said pipe..

39. In combination with a motor vehicle having a clevised laxlek anda knuckle having a king pin lixed therein with its protruding ends bearingk in` the jaws ofsaidclevis; a lubricating installation for one or vmore bearings associated Vvwith said knuckle comprising a lubricant inlet .carried jbyr the upper clevis jaw, a longitudinal bore through said king pin I draining.. lubricant from saidinlet, a pipe draining vlubricant fromsaid kingrpin berenand leadingfto. one ofisaid bearings, a

l.bored plugfixedfginsaid knuckle and having awwedgefiit4 in said king pin and a terminal forv said .pipe carried by said plug.

40,; In combination with amotor vehicle,

@devised-axle, axknuckle straddled thereby,

a king pin fixed therein and bearing in the jawsof said: clevis; alubricating installationfor one or more bearings associated with saidknnckle comprising a lubricant inlet, bore through' the length; of said king pin Ysupplied -1 therefrom, ailubricant cavityy in the lowerl clevis jaw receiving lubricant therefrom, apassage longitudinally of the upperfclevis jaw, also supplied from said inlet and `another passage carried by the vknuckle supplied vfrom `said clevis passage.

4.1. In combination with a motorvehicle.

.a clevised axle, a knuckle straddled thereby.

a king pin ixed therein and bearing in said clevis and athrustbearing betweenlsaid axle i knucklega lubricating?- installation for one or more bearings associated with said 1 knuckle comprising a` lubricant inlet, abore` -ithrough `the `length of said king pin receiv- "ing lubricant therefrom, a lubricant cavity "in the lower partof the `clevis,a` passagelongitudinally of theupper part of theclevis, "another passage carried by the knuckle supplied from` said clevis passa'gej across "said thrust bearing andmeans" encircling; said thrust' bearingto exclude dust fioin the course" of lubricant iow thereacross.'

42, In aniotor vehicle, in combination, an axle clevis, a knuckle extending "between the *jaws 'thereof and having a pivot bearing with respect theret`o,a thrust lbearingsus-` taining the ,axle uponv the knuckle, aiubricant inlet carried by the axle, and a passagewaydelivering lubricant from said inlet by gravityfiow to said thrust bearing and to a bore in said knuckle anda dividing fitting l"carried by saidknuckle and supplied from said bore, said fitting `having one branch f leading alongthe` draglinlk" arrn to the corresponding bearing and another ing tothe tierodbearing.

4:3; Inaknuckleconstruction of thetype including an axle having a clevis, a knuckle therebetween; a king "pin in said `axle clevis knuckle relative to ythefaxle,` and in which the knucklehas a tie rod armythe combina- "tion `therewith ofineans for lubricatingthe various knuckle bearings from a single point,

`by a partrigid` with the axle and near the upper clevis jaw thereof, means conveying' y `lubricant from said inlet fitting past one of|` "the kinggpinbearing surface`s`,`"to lubricatd` `the latter, a borein" the knuckle iiitercepting "i `ing` knuckle to bepivoted at an axle clevis sai'd knuckle carrying a drag link arm and fa tie rod arm, an inlet rigidwith the clevis,

dividing tting secured tosaid knuckle, 0`

" `kie and said fitting, a passage bored through parts rigidwith theknuckle from `said inlet f 1 downward ,to the `inlet off saidi dividing itftiig, and `a pair yof, pipes connecting the c c .pin i, the combination therewith of a lubri- Tfcatingfiiistallation for said thrust bearing, a `vking pin bearing and said `coifitrolibearings Vbranchesof said dividing` fitting to the tie "rod and tliedrag link bearings,`all` parts .of

"said piping system" above `thelevel of the tie ,y rod and drag linkoutlets being of bore sufiiciently "largel to permit iiowrof lubricant" about any air therein, whereby airblockiiig ""andsiphoning will be `precluded when thel "",knuckle is associated with the axle in a manner to "preclude venting thereof.`

V lAl; In combination with' a motor vehicle,

5`a`n` axle `Fclevis,*a knuckle stradd-led` by the Vtween thetop of the knuckle iand the bottom branch lead-I and having bearing surfaces [to mount the said means including an inlet fitting carried y 44:. As an article of manufacture, a steer-` said inletl being positioned above said 1kiiiic-V f the axle,"passagesdelivering lubricant therefrom in parallel `to the lower-king pin bearingand to one or more"` of the other of said c bearings and dividing means determining the division `of the lubricant between said passages from'said` inlet.` 1 l" 46. Ina motor vehicleaxle" ofthe type `including a `clevised axle and, a knuckle provided with an eye positioned between the"f jawsof said axleclevis', akingpiniixed in the knuckle eye and protrudingon either side ofsaid knuckle eye to bearwithin the jaws' ofsaid axle clevis, althrustibearing be- `of the upper clevisjaw` andtiev rod and drag link bearings f carried byV said knuckle; a

"lubricating installation for fthe upper and" lower king pin bearings, forthe thrustlbearing and for the drag link and tie rodbearings comprising an inlet rigid with the upper clevis jaw `and supplying lubricant above the upper end? of the kingfpin, aii` interior passagewayl system enclosed by. and through the upper `clevis, and in the direction ofthe Vaxis of the king pin-conducting lubricant from said inlet `to below said" clevis jaw and `to said thrust bearing, an interior lubricant conduit in the upper portion ofthe knuckle together with said passageway system, a: dividing fitting attached c to i the outside of the knuckle Handi receiving lubricant from` said knuckle" conduit, external piping i extending "along .the Qutsdeof `said knuckle to` said tie l rod and drag link bearings, the conduit lead` f ing to the tie rod bearin being ofsuiiiciently `wide bore to permit of t e reverselfiow of air ^and lubricant, saidlower king pin bearing beiiigsupplied by lubricant passing through l `said passageway system. i v

147.` A motor vehicle axle lof the typeihaving an-axle and a knuckle,-one of which elements `isclevised andi the x other off-which is provided with an eye between the `jaws of saidicl'evis,iafking piiiiiixed` to one fof said i 1 elements and having `upper-'and lowery bearings within" the other of saidelenients, control bearings carried bysaid .knuckle and a thrustbearing positioned around` said king "which comprises a lubricant :inlet rigid with `the axle, lubricant conduits from `said lubricant inlet `to said thrust bearing and other 1' lubricant conduits from said thrust vfbearing `itosaid controlbearings and to said kingspin abearing. f i

rangement receiving lubricant from said inlet, and distributing` itin parallel to said upper and lower. king pin bearings, a conduit-arrangement for conducting lubricant from said upper .king pin bearingto said thrust bearing and from `said thrust bearing in parallel to saidcontrol bearings;

49. A motor vehicle axle kof the type having an axle and a knuckle, one if which elements is .clevised and the other oi' which 1s provided with an eye embraced by thejaws of said clevis, a king pin fixed in one of said elements and having upper and lower bearings in the other of said elements, `and tie rod and drag link bearings carried externally by said knuckle; the combination therewith of a lubricating installation for said upper and lower king pin bearings and said tie rod and drag link bearings comprising an inlet rigid with the axle, ba conduit system leading from said inlet to said bearings to Ybe lubricated, .and a plurality of proportioning arrangements,associatedV with said conduit system, one proportioning arrange- `ment distributing the lubricant between the upper and lower king pin bearings and the vother proportioning arrangement distributing the lubricant between the tie rod and drag link bearings'.y I

50. A motor vehicle axle of the type having `an axle and a knuckle, one of which-elements is clevised and the other kof which is provided with .an eye between the jaws of said clevis, a 'king pin iixed to one O Asaid elements and haring .upper and lower bearings within` theother of said elements, control bearings .carried by said knuckle and a thrust bearing positioned around said king pin; the combination therewith of a lubricating installation for the upper and lower king pin bearings, thrust bearing and the control bearings comprising a 1lubricant inlet rigid with the axle, a receiving chamber above the upper end of the king pin receiving lubricant from said vinlet anil passages downwardly through the `king pin, one of said passages supplying the lower king pin bearing and the other of said passages supplying the thrust bearing and the control bearings, said control vbearings being connected to said king pin passageway by means yof piping along 'the outside of the knuckle.

51. A motor vehicle Aaxle of the type having an axle and a knuckle, one of which elements is clevised and the other of which is provided with an eye'between the jaws of said clevis, a king pin iixed to one of said elements and. having upper and lower bearings within the other of said elements, control-bearings carried by said knuckle and a thrust bearing positioned around said king pin; the combination therewith of a lubricating installation for said thrust bearingV and for a plurality of other bearings comprising an inlet rigid with the axle lubricant passageways from saidi inlet to the thrust bearing on one side oi' the king pin and from the thrust bearing on the opposite side of the king pin to said plurality of other bearings, whereby lubricant flows from said inlet through and across said thrust bearing, and thence to the other bearings.

52. A motor vehicle axle of the type having an axle and a knuckle, one of which eleients is `clevised and the other of which is provided with an eye between the jaws of said vclevis, ,a king pin Afixed to one of said elements and having upper and lower bearlings within the other oitl said elements, control bearings carried by said knuckle and a thrust bearing positioned around said king pin; ther combination therewith of a lubricating installation for said upper king pin bearing, for said thrust bearing and for one or more of said other bearings comprising a lubricant inlet rigid with said axle and positioned above and at one side otn the king pin, a receiving chamber' supplied with lubricant .from said inlet, a lubricant conduit on the other side of the king pin receiving lubricant from said chamber and conveying it to Lthe thrust bearing, and a second lubricant conduit receiving lubricant `from Vsaid thrust bearing on the same side of the king pin as said lubricant inlet and conveying it to said other bearing or bearings. 5 3. A steering knuckle of the type having an upper thrust bearing face, a fitting clamped against said knuckle and in registry with a port -at the clamping face thereoi, a bore in said knuckle terminating at the 'upper thrust bearing face thereof through which lubricant is supplied to said port and a pipe communicating with an ourlet oi said fitting and leading to the tie rod bearing and ashort length of pipe extend- 1 :ing across the clamping face between the knuckle and the fitting press-fitted into both of said elements to eifect a. substantially lubricant-tight connection therebetween.

54. In a motor vehicle, in combination, a knuckle including a tiev rod bearing at lower .-level, and a drag link bearing at higher level, a piping system for supplying said bearings, said system including a dividing fiitting clamped against the knuckle, a pipe 40 `another of said bearings.

i extending along the structure of said knuckle ing mounted between the jaws of an axle i knuckle. i

to supply the drag link bearing, and a pipe connecting the other outlet of the dividing littiiig to the tie rod bearing, and means for supplying lubricant to said dividing fitting `comprising a downward bore from the thrust bearing face of the knuckle, and an outward bore supplied tlierefroniand eX- tending transversely through the clamped face of the dividing litting, the knuckle be- 55. In combination with a niotor vehicle havin@ an axle clevs a knuckle between the c b u 7 n n Jaws thereof, a king pin through said knuckle having bearings in the jaws of said clevis and a pin transversely through said i knuckle and extending into a corresponding cavity in said king pin to lock the saine with `respect to said knuckle; a lubricating .in-

` stallation for one or more bearings associated with said knuckle comprising an axial bore insaid king pin for delivering lubricant through the upper end thereof, an axial boi'e in said locking pintor intercepting the lub?.

ricant from said king pin, an eye ineniber encircling the outer end of said locking pin and intercepting the lubricant therefrom and a pipe connected to said eye and conveying y said lubricant to one of said bearings, the

eye having a dividing outlet, one branch of which leads to one of saidbearings and the other branch through anfintervening pipe to Signed atNew York city in the county of New York and State of New York this 10th i i day of September, A. D. 1925; i y l JOSEPH BIJUR.

es Y 

